Improving the Scalability of a CommCell Environment

It is strongly recommended that the recommended soft limits are followed, and are not exceeded.

It is also recommended that you review the Deduplication Architecture Guide when planning for Commvault® Block Level Deduplication CommCell group deployments. Contact Customer Support or your Account Team for the current release of that separate document.


  • In a Dynamic Drive Sharing (DDS) environment, configure between a minimum of 2 to a maximum of 6 drives that are controlled through each MediaAgent.

    This will allow for jobs to meet the backup window needs at the same time and not overload a single MediaAgent within the network.

    Associate Storage Policies and MediaAgents evenly with backups in order to balance the data protection operations.

  • To enhance the scalability of the auxiliary copy operation and for load-balancing between the CommServe and the MediaAgent resources, ensure that Use Scalable Resource Allocation check box is selected when running an auxiliary copy operation.

    For more information, see Performing an Auxiliary Copy.

File System Agent Multi-Streaming

File System Multi-Streaming employs multiple data streams per subclient for the data protection operation, enabling the subclient contents to be distributed to all the streams, transmitting them in parallel to the storage media. We recommend that you use File System Multi-Streaming for larger subclients (1TB or more).

It allows the file system backup to use multiple readers for increased performance, this configuration in turn reduces duplicate file Scan Time on client servers.

Note: For subclients less than 1TB in total size, set the number of readers on the sub-client to 1.

Last modified: 9/5/2018 7:42:43 PM